Cannot install signed apk to device manually, got error "App not installed"

android certificate release android-install-apk
Adam Varhegyi picture Adam Varhegyi · Dec 14, 2015 · Viewed 131.1k times · Source

I'd like to publicate my app to GooglePlay but first i would like to do a last testing with the signed apk to ensure that all of the used API keys are working correctly with the release version (GMaps, Facebook, etc)

So i just made a signed version of my app with our release key and when i try to install the app to the device i got an error:

enter image description here

I have tried to copy the apk to the device and install it with an apk installer app.

Strange thing is when i do the same process with debug signing key, all is well, I can install and run the app.

Here are the steps of the procedure:

I select the release key, type password.

Here are the steps of the procedure:

I do select release build type instead of debugging

I do select release build type instead of debugging

Just in case i also defined in the gradle file the signing keys but I must admit i dont know is it necessary.

Just in case i also defined in the gradle file the signing keys but I must admit i dont know is it necessary.

I tried like 7 seven times now so i assume this problem is not just a mistyped password, also I can make this work with the standard debug android signing key.

Please help if you can.

Answer

Ragu Swaminathan picture Ragu Swaminathan · Dec 14, 2015

You may be using the android 5.0 or above device.

Just go to the Settings --> Apps --> Click on your App. ---> In App info page at the action bar menu there will be an option called " Uninstall for All users " click that. Your app will be completely uninstalled and now you can try installing the new version with no issue. Hope this will help you

Check my solution from below link.

Link 1

Hope it will help you.

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